Frequently asked questions

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Atlas and Time Zones

About
the Astrodienst Atlas

The Astrodienst atlas contains more than 250 000
towns. For more detail on the sources of the database, click on
Astrology Atlas Query in the "Free
Horoscopes" menu at the top of the page,
and follow the link About this atlas.

Can
I use your atlas and time zone information for professional
services?

The free charts and free readings from our website are for private
purposes only. They must not be redistributed commercially.
If your intended 'professional astrology service' is computer based,
you will need to purchase software for it. Such software will have
its own atlas and time zone database built-in for your use. You
will however be allowed to use our atlas database for crosschecks.

Is
there access to time zone information on your website?

The time zone database is integrated into all services. When you
enter natal data or run charts, the correct time zone information
is automatically taken into account.
We do not publish the time zone database content, so that all that
valuable and unique information can be used elsewhere. This information
is proprietary. You can use the database by using our services for
your horoscopes, but you cannot copy the contents of the database.

Do you have
an
option which allows the user to add places to the database or to
enter
the latitude and longitude of a particular place
manually?

If you provide reliable co-ordinates (longitude and latitude) and also
tell us the source, we are happy to add additional towns.

An automatic entry by web site users is not possible. The difficulty is
that each town must be linked to one of nearly 4000 different time zone
history tables. In many areas of the world there has been a complex
time zone history where often nearby cities, counties or provinces have
had different time zones or daylight savings time rules in
the past. Only experts can assign the correct time zone history table
for each
new town, by comparing the new entry to the rest of the database.

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